I dont dissagree with the thinning. So why then do HLA's sound fine, then you pounderstand on the car and they make noise. Then you drive slower for a bit and they go quite again. Certainly the broken bonds arent re-bonding?
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EDIT: phone autocorrect fail. Pounderstand. I'm keeping that.
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I like it. I second your motion to add 'pounderstand' to the MT vernacular.

Edited for correct wording: Do you have an oil temperature gauge? I do and the oil temperature goes up 30 degrees when cruising at 70mph in 3rd gear versus cruising at 70mph in 6th gear when tuning the Megasquirt. 190 to 220F. And I have a reasonably good sized oil cooler.

Is that just because the oil isn't flowing as much at a lower rpm, i.e. its utilizing your cooler less? I'd expect lower heat at lower boost/rpm. Maybe I'm just totally off in my thinking.

Thats the opposite of what I see. RPM skyrockets my oil temps much more than load. If I consistently cruise at 5-6k its much higher than if im cruising on the freeway in 6th.

Autox sees higher sustained revs, and I see much higher oil temps there.

On the track what really brings my temps up is when I don't want to shift, so i sit right before the rev limiter for a few seconds before a corner. Low load, high RPM.

I am seeing the same thing. Did I write it wrong? RPMs make oil hot quickly. Load didn't make as much difference as RPMs.

Yep, I wrote it backwards so I went back and edited it.

Lol. makes more sense now.

Is this a normal engine thing or a trait more associated with our motors?

edit. for clarity....because I thought load would generate heat more than rpm but it stacks up with my experience too.

A large amount of the heat generated in the oil system is made from oil shearing which is basically internal friction within the oil. As revs increase oil shearing forces increase and so does the heat generation. Also, oil doesn't transfer heat as well as a coolant which is why it's hard to get oil to temp whilst the car is idling even if the engine is warm.

A high reving N/A engine can see far higher heat loads than a turbo engine even with double the power.

Which goes a long way to explain my considerably hotter temps now I have 700 rpm higher rev limit...thanks. (7500 from 6900). Time for an oil cooler soon by the sounds of it.

be careful with the rev limit. I'm road racing same setup. Approx. 3 hrs after bumping redline from 7000 to 7400, shattered the TB shaft and nearly destroyed a built motor.

Thanks for the warning. I have read about this and am concerned but the aftermarket TB's are probably a bit big for the 1600.

Out of interest do you have the manifold support installed?

Don't think non oem tb exists for 1.6. Yes, oem tb brace/damper is installed.